CN102944024A - Lignite thermal power generation system - Google Patents

Lignite thermal power generation system Download PDF

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Publication number
CN102944024A
CN102944024A CN2012104480051A CN201210448005A CN102944024A CN 102944024 A CN102944024 A CN 102944024A CN 2012104480051 A CN2012104480051 A CN 2012104480051A CN 201210448005 A CN201210448005 A CN 201210448005A CN 102944024 A CN102944024 A CN 102944024A
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China
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power generation
generation system
thermal power
brown coal
coal thermal
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CN2012104480051A
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Chinese (zh)
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余学海
廖海燕
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China Shenhua Energy Co Ltd
Beijing Guohua Electric Power Co Ltd
Shenhua Guohua Beijing Electric Power Research Institute Co Ltd
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China Shenhua Energy Co Ltd
Beijing Guohua Electric Power Co Ltd
Shenhua Guohua Beijing Electric Power Research Institute Co Ltd
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Priority to CN2012104480051A priority Critical patent/CN102944024A/en
Publication of CN102944024A publication Critical patent/CN102944024A/en
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Abstract

The invention discloses a lignite thermal power generation system, which comprises a boiler (1), a turbine (2) and a condenser (3). An air exhaust opening of the boiler (1) is connected with an air inlet of the turbine (2); an air exhaust opening of the turbine (2) is connected with an air inlet of the condenser (3); a liquid discharging opening of the condenser (3) is connected with a liquid inlet of the boiler (1), wherein the lignite thermal power generation system also comprises a coal bunker (4) and a dryer (5); a discharge port of the coal bunker (4) is connected with a feed port of the dryer (5); and a discharge port of the dryer (5) is connected with a feed port of the boiler (1). A lignite drying system is combined in the lignite thermal power generation system, so that lignite can be directly subjected to combustion for power generation after being dried.

Description

The brown coal thermal power generation system
Technical field
The present invention relates to coal firepower power field, particularly, relate to a kind of brown coal thermal power generation system.
Background technology
At present, because lignite resource is abundanter, reserves are larger, and cost is lower, usually adopt brown coal to act as a fuel in the electricity generation system of thermal power generation and generate electricity.The explored brown coal reserves of China are about 2,000 hundred million tons, and most brown coal are distributed in the northeastern Inner Mongolia area, account for 3/4 of national brown coal reserves.But, the shortcomings such as brown coal ubiquity moisture high (water content is about 30%-50%), burning-point is low and CO2 emissions are large, being directly used in combustion power generation can cause generating efficiency lower, environmental pollution is larger, but also can increase equipment construction and the operating cost of power plant, and the water content that brown coal are higher also can cause the increase of freight, has therefore limited the application of brown coal in power field.
Because the water content of brown coal own is higher, directly the thermal efficiency of burning is lower in boiler for brown coal, causes the flue gas loss of boiler larger, and CO 2Discharge capacity is larger.In addition, the thermal efficiency that brown coal directly burn is lower, so that the size of boiler, fuel pulverizing plant, each pipeline is all larger, involves great expense, and other auxiliary equipment capacity is also larger, causes power consumption rate higher.
At present, for the problems referred to above, brown coal drying system is set in the thermal power plant independently usually brown coal is carried out dry in advance, so that after the water content of brown coal is reduced to a certain degree, again brown coal is transported to and burns in the boiler and generate electricity.But brown coal drying system and electricity generation system arrange separately and cause the numerous and diverse of electrification technique as well as and operation, management inconvenience, and the generating resource can not take full advantage of effectively, cause energy waste, and also have defective at aspects such as dust removal process.
Summary of the invention
The purpose of this invention is to provide a kind of brown coal thermal power generation system, this brown coal thermal power generation system is attached to brown coal drying system wherein, thereby can carry out directly carrying out combustion power generation after the drying to brown coal.
To achieve these goals, the invention provides a kind of brown coal thermal power generation system, this brown coal thermal power generation system comprises boiler, steam turbine and condenser, the exhaust outlet of described boiler is connected with the air inlet of described steam turbine, the exhaust outlet of described steam turbine is connected with the air inlet of described condenser, the leakage fluid dram of described condenser is connected with the inlet of described boiler, wherein, this brown coal thermal power generation system also comprises coal bunker and drying machine, the discharging opening of described coal bunker is connected with the charging aperture of described drying machine, and the discharging opening of described drying machine is connected with the charging aperture of described boiler.
Preferably, described brown coal thermal power generation system also comprises heat exchanger and water purification installation, the tail gas mouth of described drying machine is connected with the air inlet of described heat exchanger, the leakage fluid dram of described heat exchanger is connected with the inlet of described water purification installation, and described heat exchanger is connected between the inlet of the leakage fluid dram of described condenser and described boiler.
Preferably, described heat exchanger is finned heat exchanger or heat exchange of heat pipe.
Preferably, described water purification installation comprises wet scrubber and settler, the inlet of described wet scrubber is connected with the leakage fluid dram of described heat exchanger, the leakage fluid dram of described wet scrubber is connected with the inlet of described settler, the purified liquor outlet of described settler is connected with the clear liquid entrance of described wet scrubber, and described wet scrubber also has exhaust outlet.
Preferably, described brown coal thermal power generation system also comprises cesspool, and the turbid liquid outlet of described settler is connected with described cesspool.
Preferably, described brown coal thermal power generation system also comprises filter, and the tail gas mouth of described drying machine is connected with the air inlet of described filter, and the exhaust outlet of described filter is connected with the air inlet of described heat exchanger.
Preferably, described filter is ceramic filter.
Preferably, described brown coal thermal power generation system also comprises oxygen-eliminating device, and this oxygen-eliminating device is connected between the inlet of described heat exchanger and described boiler.
Preferably, the exhaust outlet of described steam turbine also is connected with the air inlet of described drying machine, and the leakage fluid dram of described drying machine is connected with the inlet of described oxygen-eliminating device.
Preferably, described brown coal thermal power generation system also comprises primary heater, and this primary heater is in parallel with described heat exchanger.
Preferably, described brown coal thermal power generation system also comprises coal pulverizer, and this coal pulverizer is connected between the charging aperture of the discharging opening of described drying machine and described boiler.
Preferably, described brown coal thermal power generation system also comprises the first feeder, and this first feeder is connected between the charging aperture of the discharging opening of described drying machine and described coal pulverizer, and the slag-drip opening of described filter is connected with the charging aperture of described the first feeder.
Preferably, described brown coal thermal power generation system also comprises the second feeder, and this second feeder is connected between the charging aperture of the discharging opening of described coal bunker and described drying machine.
Preferably, described brown coal thermal power generation system also comprises secondary heater, and this secondary heater is connected between the inlet of the leakage fluid dram of described oxygen-eliminating device and described boiler.
Preferably, described brown coal thermal power generation system also comprises the first pump, the second pump and the 3rd pump, described the first pump is connected between the inlet of the leakage fluid dram of described condenser and described primary heater, described the second pump is connected between the inlet of the leakage fluid dram of described oxygen-eliminating device and described secondary heater, and described the 3rd pump is connected between the inlet of the leakage fluid dram of described drying machine and described oxygen-eliminating device.
Preferably, described condenser is air cooler or cooling tower.
Preferably, described drying machine is steam pipe type rotary drying machine or steam fluid bed dryer.
Pass through technique scheme, owing in the brown coal thermal power generation system, be provided with drying machine, directly send in the boiler after the wet brown coal process drying machine drying in the coal bunker and burn, the boiler combustion brown coal produce a large amount of high steam pushing turbine actings and generate electricity, the low-pressure steam of discharging from steam turbine enters and cools off the formation water that condenses in the condenser, these water are transported to and generate steam in the boiler, and are recycling.This brown coal thermal power generation system is attached to brown coal drying system wherein, thereby can carry out directly carrying out combustion power generation after the drying to brown coal, simplifies the electrification technique as well as flow process, the freight of having saved brown coal.
Other features and advantages of the present invention will partly be described in detail in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide a further understanding of the present invention, and consists of the part of specification, is used from explanation the present invention with the following specific embodiment one, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the brown coal thermal power generation system of embodiments of the present invention.
Description of reference numerals
1 boiler, 2 steam turbines
3 condensers, 4 coal bunkers
5 drying machines, 6 coal pulverizers
7 oxygen-eliminating devices, 8 primary heaters
9 heat exchangers, 10 water purification installations
11 wet scrubbers, 12 settlers
13 filters, 14 first feeders
15 second feeders, 16 secondary heaters
17 first pumps, 18 second pumps
19 the 3rd pumps, 20 cesspools
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.Should be understood that the specific embodiment described herein only is used for description and interpretation the present invention, is not limited to the present invention.
As shown in Figure 1, the specific embodiment of the present invention provides a kind of brown coal thermal power generation system, this brown coal thermal power generation system comprises boiler 1, steam turbine 2 and condenser 3, the exhaust outlet of described boiler 1 is connected with the air inlet of described steam turbine 2, the exhaust outlet of described steam turbine 2 is connected with the air inlet of described condenser 3, the leakage fluid dram of described condenser 3 is connected with the inlet of described boiler 1, wherein, this brown coal thermal power generation system also comprises coal bunker 4 and drying machine 5, the discharging opening of described coal bunker 4 is connected with the charging aperture of described drying machine 5, and the discharging opening of described drying machine 5 is connected with the charging aperture of described boiler 1.
Owing in the brown coal thermal power generation system, be provided with drying machine 5, directly send in the boiler 1 after wet brown coal process drying machine 5 dryings in the coal bunker 4 and burn, boiler 1 burning brown coal produce a large amount of high steam pushing turbine 2 actings and generate electricity, the low-pressure steam of discharging from steam turbine 2 enters and cools off the formation water that condenses in the condenser 3, these water are transported in the boiler 1 again and generate steam, and are recycling.This brown coal thermal power generation system is attached to brown coal drying system wherein, thereby can carry out directly carrying out combustion power generation after the drying to brown coal, simplifies the electrification technique as well as flow process, the freight of having saved brown coal.
Wherein, condenser 3 adopts air cooler usually in the water-deficient area, and usually adopts cooling tower in general area.
As shown in Figure 1, owing to can produce a large amount of tail gas when 5 pairs of brown coal of drying machine carry out drying, and pollute the environment with a large amount of heats and dust in these tail gas, preferably, described brown coal thermal power generation system also comprises heat exchanger 9 and water purification installation 10, the tail gas mouth of described drying machine 5 is connected with the air inlet of described heat exchanger 9, the leakage fluid dram of described heat exchanger 9 is connected with the inlet of described water purification installation 10, and described heat exchanger 9 is connected between the inlet of the leakage fluid dram of described condenser 3 and described boiler 1.The tail gas that drying machine 5 drying brown coals produce is discharged from the tail gas mouth of drying machine 5, then enter the water of discharging with condenser 3 in the heat exchanger 9 and carry out heat exchange, thereby preheat the water that is entered into boiler 1 by condenser 3, so that heat is recycled utilization, reduce the coal amount of boiler 1 burning, reduce cost of electricity-generating.Then, tail gas in heat exchanger 9 after the heat exchange temperature reduce, form a certain amount of mixed liquor and enter and carry out purified treatment in the water purification installation 10, to remove the dust that dissolves in the mixed liquor, impurity etc., thereby obtain the higher water of water quality for recycling, and reduce wastewater discharge.
Wherein heat exchanger 9 can adopt the heat-exchanger rig of various models and structure, and in order to reach preferably heat transfer effect, as a kind of embodiment, described heat exchanger 9 is finned heat exchanger or heat exchange of heat pipe.As heat transfer element, its heat transfer efficiency is high with dull and stereotyped and fin for finned heat exchanger, compact conformation, lightly.Heat pipe is a kind of heat-transferring assembly with high thermal conductivity, and heat exchange of heat pipe is the heat exchanger take heat pipe as heat transfer element, heat exchange of heat pipe have heat transfer efficiency height, compact conformation, fluid resistance decrease little, be conducive to control the advantage such as dew point corrosion.Adopt this two classes heat exchanger can improve the efficient of heat recovery, conserve energy reduces energy consumption.
As shown in Figure 1, as one embodiment of the present invention, preferably, described water purification installation 10 comprises wet scrubber 11 and settler 12, the inlet of described wet scrubber 11 is connected with the leakage fluid dram of described heat exchanger 9, the leakage fluid dram of described wet scrubber 11 is connected with the inlet of described settler 12, and the purified liquor outlet of described settler 12 is connected with the clear liquid entrance of described wet scrubber 11, and described wet scrubber 11 also has exhaust outlet.
Tail gas carries out heat exchange in heat exchanger 1 after, steam in the tail gas condenses owing to temperature is lower and forms liquid mixture, these liquid mixtures enter wet scrubber 11 and carry out dedusting, and on-condensible gas is discharged through the exhaust outlet from wet scrubber 11 after the cleaning dust.
Dust-laden waste water enters and carries out precipitation process in the settler 12, so that contamination precipitation wherein forms turbid liquid to the bottom, the upper strata forms comparatively pure clear liquid, clear liquid is got back in the wet scrubber 11 through the purified liquor outlet of settler 12, recycling dust removal process of carrying out tail gas, save water resource, reduced cost.
Because will inevitably produce sewage in the process of brown coal thermal power generation system operation, as shown in Figure 1, preferably, described brown coal thermal power generation system also comprises cesspool 20, the turbid liquid outlet of described settler 12 is connected with described cesspool 20.The turbid liquid that settler 12 has precipitated rear formation is discharged into and carries out wastewater treatment in the cesspool 20, supplies with at last power plant and fully utilizes.
As shown in Figure 1, usually contain a large amount of dust in the tail gas behind the brown coal drying, preferably, described brown coal thermal power generation system also comprises filter 13, the tail gas mouth of described drying machine 5 is connected with the air inlet of described filter 13, and the exhaust outlet of described filter 13 is connected with the air inlet of described heat exchanger 9.After the tail gas of being discharged by the tail gas mouth of drying machine 5 carries out dust removal process first, remove the most crude particle that contains in the tail gas, carry out again purifying water process, cause water quality relatively poor in the water in order to avoid dust is dissolved in, and reduce the live load of follow-up water purification installation 10.
Filter 13 can adopt the filter of various forms and structure, and in order to reach better dust removing effects, preferably, described filter 13 is ceramic filter.Can effectively remove or reduce field trash in the tail gas by ceramic filter, improve the degree of purity of tail gas, prevent that the solid impurity in the tail gas from entering damage equipment in the follow-up equipment.
As shown in Figure 1, because boiler 1 has certain requirement for water quality, preferably, described brown coal thermal power generation system also comprises oxygen-eliminating device 7, and this oxygen-eliminating device 7 is connected between the inlet of described heat exchanger 9 and described boiler 1.Oxygen-eliminating device 7 can be removed oxygen and other gas that is dissolved in the water, and prevents and reduce the corrosion of boiler feed pipe, economizer and other auxiliary device.Oxygen-eliminating device 7 is key equipments of boiler 1 and brown coal thermal power generation system, if oxygen-eliminating device 7 or oxygen-eliminating device 7 deoxygenation ability are not set, will to boiler 1 cause badly damaged.
As one embodiment of the present invention, described drying machine 5 is generally steam pipe type rotary drying machine or steam fluid bed dryer, to obtain better drying effect.These two kinds of drying machines all adopt steam as thermal source brown coal to be carried out heat drying, for recycling water resource, as shown in Figure 1, preferably, the exhaust outlet of described steam turbine 2 also is connected with the air inlet of described drying machine 5, and the leakage fluid dram of described drying machine 5 is connected with the inlet of described oxygen-eliminating device 7.Usually, the low-pressure steam that drying machine 5 can utilize steam turbine 2 to discharge heats the wet brown coal that enter in the drying machine 5, wherein moisture drying evaporation formed tail gas after brown coal were heated, and vapor (steam) temperature reduces and to condense into water and flow to the oxygen-eliminating device 7 from the leakage fluid dram of drying machine 5, through supplying with boiler 1 after oxygen-eliminating device 7 deoxygenations.
As shown in Figure 1, for abundant heating enters into the water of boiler 1 by condenser 3, preferably, described brown coal thermal power generation system also comprises primary heater 8, and this primary heater 8 is in parallel with described heat exchanger 9.In the situation of the shortage of heat of recycling with the water that heats all condensers 3 and discharge, the water of part can enter in the oxygen-eliminating device 7 by primary heater 8, is preheated by 8 pairs of water of primary heater, thereby water is fully heated, reduce the coal amount of boiler 1 burning, reduce cost of electricity-generating.
As shown in Figure 1, because the brown coal that coal bunker 4 stores are generally relatively large raw coal, preferably, described brown coal thermal power generation system also comprises coal pulverizer 6, and this coal pulverizer 6 is connected between the charging aperture of the discharging opening of described drying machine 5 and described boiler 1.Drying machine 5 dried larger brown coal, are then offered coal dust boiler 1 and burn with coal crusher and wear into coal dust by coal pulverizer 6, reduce the use amount of brown coal so that brown coal can fully burn.
As shown in Figure 1, grind in order conveniently drying machine 5 dried brown coal to be flowed to coal pulverizer 6, preferably, described brown coal thermal power generation system also comprises the first feeder 14, this first feeder 14 is connected between the charging aperture of the discharging opening of described drying machine 5 and described coal pulverizer 6, and the slag-drip opening of described filter 13 is connected with the charging aperture of described the first feeder 14.Feeder is applicable to the pulverized coal preparation system of thermal power plant fire coal, the first feeder 14 can be provided and delivered to an amount of brown coal of coal pulverizer 6 according to the Coal-fired capacity of boiler 1, thereby improve the combustibility of boiler, so that fuel and required air quantity mate more, the first feeder 14 is coal supply continuously, and weighing is accurate, working stability, efficient energy-saving is the metering coal supply equipment that is complementary with coal pulverizer 6 in the pulverized coal preparation system of boiler 1.In addition, filter 13 filters out wet coal dust can be got rid of by the slag-drip opening of filter 13, and through entering in the first feeder 14 after the air natural drying, flows at last coal pulverizer 6, thereby coal dust is recycled, and saves cost, takes full advantage of resource.
As shown in Figure 1, for conveniently the brown coal in the coal bunker 4 are flowed to drying machine 5 carries out drying, preferably, described brown coal thermal power generation system also comprises the second feeder 15, and this second feeder 15 is connected between the charging aperture of the discharging opening of described coal bunker 4 and described drying machine 5.The second feeder 15 can flow to according to the dry amount of drying machine 5 the wet brown coal of drying machine 5 suitable quantities, thereby so that the abundant drying brown coal and take full advantage of the load of drying machine 5 of drying machine 5 reaches the resource reasonable distribution, reduces cost.
For so that the water that enters in the boiler 1 meets the requirements of temperature, as shown in Figure 1, preferably, described brown coal thermal power generation system also comprises secondary heater 16, and this secondary heater 16 is connected between the inlet of the leakage fluid dram of described oxygen-eliminating device 7 and described boiler 1.Secondary heater 16 can preheat the water that enters in the boiler 1, makes its requirement that reaches boiler 1, thereby can be so that water fully vaporization in boiler 1, and reduces the quantity combusted of brown coal, economizes on resources.
For so that water flows smooth and easy in the brown coal thermal power generation system, as shown in Figure 1, preferably, described brown coal thermal power generation system also comprises the first pump 17, the second pump 18 and the 3rd pump 19, described the first pump 17 is connected between the inlet of the leakage fluid dram of described condenser 3 and described primary heater 8, described the second pump 18 is connected between the inlet of the leakage fluid dram of described oxygen-eliminating device 7 and described secondary heater 16, and described the 3rd pump 19 is connected between the inlet of the leakage fluid dram of described drying machine 5 and described oxygen-eliminating device 7.The first pump 17 can be transported to the water that condenses in the primary heater 8 and heat in condenser 3, the water of the second pump 18 after can oxygen-eliminating device 7 deoxygenations are complete is transported in the secondary heater 16 and heats, and the 3rd pump 19 can be transported to the water that produces behind drying machine 5 drying brown coals and carry out deoxygenation in the oxygen-eliminating device 7 and process.
Below describe by reference to the accompanying drawings preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove in addition, each concrete technical characterictic described in the above-mentioned specific embodiment in reconcilable situation, can make up by any suitable mode, for fear of unnecessary repetition, the present invention is to the no longer separately explanation of various possible combinations.
In addition, also can carry out any combination between the various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.

Claims (17)

1. brown coal thermal power generation system, this brown coal thermal power generation system comprises boiler (1), steam turbine (2) and condenser (3), the exhaust outlet of described boiler (1) is connected with the air inlet of described steam turbine (2), the exhaust outlet of described steam turbine (2) is connected with the air inlet of described condenser (3), the leakage fluid dram of described condenser (3) is connected with the inlet of described boiler (1), it is characterized in that, this brown coal thermal power generation system also comprises coal bunker (4) and drying machine (5), the discharging opening of described coal bunker (4) is connected with the charging aperture of described drying machine (5), and the discharging opening of described drying machine (5) is connected with the charging aperture of described boiler (1).
2. brown coal thermal power generation system according to claim 1, it is characterized in that, this brown coal thermal power generation system also comprises heat exchanger (9) and water purification installation (10), the tail gas mouth of described drying machine (5) is connected with the air inlet of described heat exchanger (9), the leakage fluid dram of described heat exchanger (9) is connected with the inlet of described water purification installation (10), and described heat exchanger (9) is connected between the inlet of the leakage fluid dram of described condenser (3) and described boiler (1).
3. brown coal thermal power generation system according to claim 2 is characterized in that, described heat exchanger (9) is finned heat exchanger or heat exchange of heat pipe.
4. brown coal thermal power generation system according to claim 2, it is characterized in that, described water purification installation (10) comprises wet scrubber (11) and settler (12), the inlet of described wet scrubber (11) is connected with the leakage fluid dram of described heat exchanger (9), the leakage fluid dram of described wet scrubber (11) is connected with the inlet of described settler (12), the purified liquor outlet of described settler (12) is connected with the clear liquid entrance of described wet scrubber (11), and described wet scrubber (11) also has exhaust outlet.
5. brown coal thermal power generation system according to claim 4 is characterized in that, this brown coal thermal power generation system also comprises cesspool (20), and the turbid liquid outlet of described settler (12) is connected with described cesspool (20).
6. brown coal thermal power generation system according to claim 2, it is characterized in that, this brown coal thermal power generation system also comprises filter (13), the tail gas mouth of described drying machine (5) is connected with the air inlet of described filter (13), and the exhaust outlet of described filter (13) is connected with the air inlet of described heat exchanger (9).
7. brown coal thermal power generation system according to claim 6 is characterized in that, described filter (13) is ceramic filter.
8. the described brown coal thermal power generation system of any one according to claim 2-7, it is characterized in that, this brown coal thermal power generation system also comprises oxygen-eliminating device (7), and this oxygen-eliminating device (7) is connected between the inlet of described heat exchanger (9) and described boiler (1).
9. brown coal thermal power generation system according to claim 8 is characterized in that, the exhaust outlet of described steam turbine (2) also is connected with the air inlet of described drying machine (5), and the leakage fluid dram of described drying machine (5) is connected with the inlet of described oxygen-eliminating device (7).
10. brown coal thermal power generation system according to claim 9 is characterized in that, this brown coal thermal power generation system also comprises primary heater (8), and this primary heater (8) is in parallel with described heat exchanger (9).
11. brown coal thermal power generation system according to claim 8 is characterized in that, this brown coal thermal power generation system also comprises coal pulverizer (6), and this coal pulverizer (6) is connected between the charging aperture of the discharging opening of described drying machine (5) and described boiler (1).
12. brown coal thermal power generation system according to claim 11, it is characterized in that, this brown coal thermal power generation system also comprises the first feeder (14), this first feeder (14) is connected between the charging aperture of the discharging opening of described drying machine (5) and described coal pulverizer (6), and the slag-drip opening of described filter (13) is connected with the charging aperture of described the first feeder (14).
13. brown coal thermal power generation system according to claim 12, it is characterized in that, this brown coal thermal power generation system also comprises the second feeder (15), and this second feeder (15) is connected between the charging aperture of the discharging opening of described coal bunker (4) and described drying machine (5).
14. brown coal thermal power generation system according to claim 13, it is characterized in that, this brown coal thermal power generation system also comprises secondary heater (16), and this secondary heater (16) is connected between the inlet of the leakage fluid dram of described oxygen-eliminating device (7) and described boiler (1).
15. brown coal thermal power generation system according to claim 14, it is characterized in that, this brown coal thermal power generation system also comprises the first pump (17), the second pump (18) and the 3rd pump (19), described the first pump (17) is connected between the inlet of the leakage fluid dram of described condenser (3) and described primary heater (8), described the second pump (18) is connected between the inlet of the leakage fluid dram of described oxygen-eliminating device (7) and described secondary heater (16), and described the 3rd pump (19) is connected between the inlet of the leakage fluid dram of described drying machine (5) and described oxygen-eliminating device (7).
16. brown coal thermal power generation system according to claim 1 is characterized in that, described condenser (3) is air cooler or cooling tower.
17. brown coal thermal power generation system according to claim 1 is characterized in that, described drying machine (5) is steam pipe type rotary drying machine or steam fluid bed dryer.
CN2012104480051A 2012-11-09 2012-11-09 Lignite thermal power generation system Pending CN102944024A (en)

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CN104179537A (en) * 2014-08-18 2014-12-03 北京电力设备总厂 Brown coal drying power generating system capable of recycling water in coal and implementation method of brown coal drying power generating system
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CN110131001A (en) * 2019-04-24 2019-08-16 中国神华能源股份有限公司 The regulation method of electricity generation system and electricity generation system

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CN103727758B (en) * 2013-12-13 2016-04-13 中国神华能源股份有限公司 A kind of processing method of brown coal and system
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CN103939158B (en) * 2014-05-09 2015-10-07 湖南华银能源技术有限公司 A kind of low-order coal purification power generation system
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CN104179537A (en) * 2014-08-18 2014-12-03 北京电力设备总厂 Brown coal drying power generating system capable of recycling water in coal and implementation method of brown coal drying power generating system
CN104179537B (en) * 2014-08-18 2017-01-25 北京电力设备总厂有限公司 Brown coal drying power generating system capable of recycling water in coal and implementation method of brown coal drying power generating system
CN104534848A (en) * 2014-12-29 2015-04-22 中国华电集团科学技术研究总院有限公司 Brown coal drying power generation system and implementation method thereof
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Application publication date: 20130227